Chip-on-leads Or Leads-on-chip Techniques, I.e., Inner Lead Fingers Being Used As Die Pad (epo) Patents (Class 257/E23.039)
  • Patent number: 7170161
    Abstract: Methods of forming a semiconductor assembly are described which include a leadframe with leads having offset portions exposed at an outer surface of a material package to form a grid array. An electrically conductive compound, such as solder, may be disposed or formed on the exposed lead portions to form a grid array such as a ball grid array (“BGA”) or other similar array-type structure of dielectric conductive elements. The leads may have inner bond ends including a contact pad thermocompressively bonded to a bond pad of the semiconductor chip to enable electrical communication therewith and a lead section with increased flexibility to improve the thermocompressive bond. The inner bond ends may also be wirebonded to the bond pads.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: January 30, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Chan Min Yu, Ser Bok Leng, Low Siu Waf, Chia Yong Poo, Eng Meow Koon
  • Patent number: 7161232
    Abstract: A method and apparatus for making reliable miniature semiconductor packages having a reduced height and footprint is provided. The package includes a semiconductor chip having an active surface and a non-active surface and one or more contacts positioned adjacent the semiconductor chip. Electrical connections are formed between the contacts and the semiconductor chip. An adhesive tape provided adjacent the non-active surface of the semiconductor chip and the one or more contacts positioned adjacent the semiconductor chip. An adhesive material provided between the non-active surface of the chip and the adhesive tape.
    Type: Grant
    Filed: September 14, 2004
    Date of Patent: January 9, 2007
    Assignee: National Semiconductor Corporation
    Inventors: Shaw Wei Lee, Nghia Thuc Tu, Santhiran S/O Nadarajah, Lim Peng Soon
  • Publication number: 20060284291
    Abstract: A semiconductor die package is disclosed. In one embodiment, the die package includes a semiconductor die including a first surface and a second surface, and a leadframe structure having a die attach region and a plurality of leads extending away from the die attach region. The die attach region includes one or more apertures. A molding material is around at least portions of the die attach region of the leadframe structure and the semiconductor die. The molding material is also within the one or more apertures.
    Type: Application
    Filed: June 6, 2006
    Publication date: December 21, 2006
    Inventors: Rajeev Joshi, Chung-Lin Wu
  • Patent number: 7148578
    Abstract: A semiconductor chip comprises a semiconductor substrate having integrated circuits formed on a cell region and a peripheral circuit region adjacent to each other. A bond pad-wiring pattern is formed on the semiconductor substrate. A pad-rearrangement pattern is electrically connected to the bond pad-wiring pattern. The pad-rearrangement pattern includes a bond pad disposed over at least a part of the cell region. The bond pad-wiring pattern is formed substantially in a center region of the semiconductor substrate. Thus, with the embodiments of the present invention, the overall chip size can thereby be substantially reduced and an MCP can be fabricated without the problems mentioned above.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: December 12, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Hee Song, Il-Heung Choi, Jeong-Jin Kim, Hae-Jeong Sohn, Chung-Woo Lee
  • Patent number: 7138707
    Abstract: A semiconductor package comprising a semiconductor die which has opposed first and second surfaces and at least first and second bond pads disposed on the second surface thereof. In addition to the semiconductor die, the semiconductor package includes at least one lead having opposed first and second surfaces, the first surface of the lead being electrically connected to the first bond pad. Also included in the semiconductor package is at least one conductive post having opposed first and second surfaces, the first surface of the conductive post being electrically connected to the second bond pad. A package body at least partially encapsulates the semiconductor die, the lead, and the conductive post such that the second surface of the lead and the second surface of the conductive post are exposed in a common exterior surface of the package body.
    Type: Grant
    Filed: October 21, 2003
    Date of Patent: November 21, 2006
    Assignee: Amkor Technology, Inc.
    Inventors: Seung Ju Lee, Won Chul Do, Kwang Eung Lee
  • Publication number: 20060255438
    Abstract: A power QFN package includes signal leads, a die pad, support leads, and an adhesive for die bonding. These elements are encapsulated with a resin encapsulant. The lower parts of the signal leads are exposed from the resin encapsulant to function as external electrodes. A middle part of the die pad is formed at a higher level than a peripheral part thereof. This permits the formation of through holes in a thin part of the die pad. This enhances the degree of flexibility in the size of a semiconductor chip and the moisture resistance thereof.
    Type: Application
    Filed: May 1, 2006
    Publication date: November 16, 2006
    Inventors: Kouji Omori, Hideki Sakoda
  • Patent number: 7115978
    Abstract: A package structure includes a lead frame having a plurality of leads, each of which includes a first recession, at least a first device, and a plurality of solder joints respectively positioned in the first recessions for connecting the first device to the lead frame.
    Type: Grant
    Filed: October 6, 2004
    Date of Patent: October 3, 2006
    Assignee: Orient Semiconductor Electronics, Ltd.
    Inventors: Kuo-Yang Sun, Chia-Ming Yang
  • Publication number: 20060202313
    Abstract: An integrated circuit package is disclosed. The package comprises a plurality of leads, each lead having a first face and a second face opposite to the first face. The package also comprises a die pad having a first face and a second face opposite to the first face. The second face of the die pad is orthogonally offset from the second face of the leads so that the second face of the die pad and the second face of the leads are not coplanar. The package also comprises an integrated circuit chip substantially laterally disposed between the plurality of leads, and having a first face and a second face opposite to the first face. The first face of the integrated circuit chip is proximate to the second face of the die pad and the first face of the integrated circuit chip is coupled to the second face of the die pad. The package further comprises a plurality of wires that link the plurality of leads to the integrated circuit chip.
    Type: Application
    Filed: May 8, 2006
    Publication date: September 14, 2006
    Inventors: Hien Tan, Anthony Sun, Francis Koon Poh
  • Publication number: 20060186517
    Abstract: A semiconductor package having improved adhesiveness between the chip paddle and the package body and having improved ground-bonding of the chip paddle. A plurality of through-holes are formed in the chip paddle for increasing the bonding strength of encapsulation material in the package body. A plurality of tabs are formed in the chip paddle may also be used alone or in conjunction with the through-holes to further increase the bonding strength of the encapsulation material in the package body. The tabs provide additional area for the bonding site to ground wires from the semiconductor chip by increasing the length of the chip paddle.
    Type: Application
    Filed: April 21, 2006
    Publication date: August 24, 2006
    Inventor: Sung Jang
  • Patent number: 7091588
    Abstract: A primary side circuit and a secondary side circuit are provided on first and second semiconductor substrates, respectively. A first capacitive insulator on the first substrate electrically insulates and isolates between the primary and secondary side circuits while permitting signal transmission between these circuits. A second capacitive insulator on the second semiconductor substrate electrically isolates the primary and secondary side circuit while permitting signal transmission therebetween. First and second frames are provided for input and output of signals to and from the primary and secondary side circuits. External electrodes of the first and second capacitive insulators are connected together by a third lead frame via a conductive adhesive body including more than one solder ball. The first and second substrates and the lead frames are sealed by a dielectric resin.
    Type: Grant
    Filed: December 30, 2004
    Date of Patent: August 15, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Noboru Akiyama, Minehiro Nemoto, Seigou Yukutake, Yasuyuki Kojima, Kazuyuki Kamegaki
  • Publication number: 20060175689
    Abstract: A multi-leadframe semiconductor package and method of manufacture includes a first leadframe having a die pad and a plurality of contact leads around the periphery of the die pad. A die is attached to the die pad and electrically connected to the plurality of contact leads. A heat spreader leadframe having a heat spreader and a plurality of terminal leads around the periphery of the heat spreader is provided. The die pad is attached to the heat spreader, and the plurality of contact leads is attached to the plurality of terminal leads.
    Type: Application
    Filed: February 8, 2005
    Publication date: August 10, 2006
    Applicant: STATS CHIPPAC LTD.
    Inventors: Il Kwon Shim, Seng Guan Chow, Jeffrey Punzalan, Pandi Marimuthu